Java Exercises: Convert 3 digits positive number in given format

Java Basic: Exercise-246 with Solution

Let us use the letter H to mean "hundred", the letter T to mean "ten" and “1, 2, . . . n” to represent the ones digit n (<10).
Write a Java program to convert 3 digits positive number in above format. For example, 234 should be output as BBSSS1234 because it has 2 "hundreds", 3 "ten", and 4 of the ones.

Input:
235
230
Output:
HHTTT12345
HHTTT

Sample Solution:

Java Code:

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
		System.out.println("Input a positive number(max three digits):");
        char[] num = String.format("%03d", in.nextInt()).toCharArray();
        StringBuilder tm = new StringBuilder();
        for (int i = 0; i < num[0] - '0'; i++) {
            tm.append("H");
        }
        for (int i = 0; i < num[1] - '0'; i++) {
            tm.append("T");
        }
        for (int i = 0; i < num[2] - '0'; i++) {
            tm.append(i + 1);
        }
		System.out.println("Result:");		
        System.out.println(tm.toString());
    }
}

Sample Output:

Input a positive number(max three digits):
235
Result:
HHTTT12345

Pictorial Presentation:

Flowchart:

Java Code Editor:

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